Levoit Vital 100S vs Winix 5510

“Is your ceiling 2.4 meters high? If so, this would make your rooms' volume 96 m^(3). The particulate Clean Air Delivery Rate (CADR) for a purifier should be (bare minimum) 3 times your room's volume when measured in m^(3). This is for normal pollution concentrations. The Levoit Vital 100S has a CADR of 240 m^(3)/h. However, you need a CADR of 288 m^(3)/h at the very least. I would recommend something more powerful, with a CADR ranging from 384 - 576 m^(3)/h. Regarding your bathroom, is it closed off from your bedroom? Air purifiers can't overcome walls and doors. Don't use Auto Mode. The sensor responsible for detecting pollutant changes is very cheap and inaccurate. You should only be using the highest airflow/speed setting possible for now. Ideally, you should buy a different purifier with a higher CADR.”

“Yes. 5510 uses Filter Q. 5500-2 uses Filter H. Currently (and for a while) Q filters aren’t being sold on Amazon via Winix officially. It is only available on their actual website for $79. But poor reviews are showing that customers are revealing that 5510 & 5500-2 filters are NOT compatible.”